68550970819 has 2 divisors, whose sum is σ = 68550970820. Its totient is φ = 68550970818.

The previous prime is 68550970781. The next prime is 68550970823. The reversal of 68550970819 is 91807905586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68550970819 - 2⁹ = 68550970307 is a prime.

It is a super-2 number, since 2×68550970819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68550970879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34275485409 + 34275485410.

It is an arithmetic number, because the mean of its divisors is an integer number (34275485410).

Almost surely, 2^68550970819 is an apocalyptic number.

68550970819 is a deficient number, since it is larger than the sum of its proper divisors (1).

68550970819 is an equidigital number, since it uses as much as digits as its factorization.

68550970819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 58.

The spelling of 68550970819 in words is "sixty-eight billion, five hundred fifty million, nine hundred seventy thousand, eight hundred nineteen".